Question

Find the average of (5 + 5 + ______ upto 200 times) and (8 + 8 + ______ upto 100 times).

• A. 6.5
• B. 7
• C. 6
• D. 75

Answer 1

Answer:

C. 6

Solution:

Given :

Formula used = (Sum of Observation) / number of Observation

concept = $\frac{(5\times{n} + 8\times{m})}{m+n}$

⇒ $\frac{(5\times{200} + 8\times{100})}{(200+100)}$

⇒$\frac{1800}{300 }= 6$